Cold shrink cable splice

Abstract

The utility model discloses a kind of cold shrink cable intermediate connecting pieces, comprising: covering, the inner surface of the covering is equipped with support pipe, the both ends of the covering are equipped with fixed ring, the fixed ring is threadedly connected with adjusting lever, the end of the adjusting lever away from fixed ring is rotatably connected with clamping plate, the side of the fixed ring and covering connection is provided with connecting ring, the fixed ring includes upper clamping ring and lower clamping ring, the outer surface of the upper clamping ring is fixedly connected with upper connecting seat, the outer surface of the lower clamping ring is fixedly connected with lower connecting seat, by the fixed ring of both ends, the position of connecting piece is fixed before being extracted from the support pipe inside, to ensure the accuracy of connecting piece to cable covering position, to avoid the influence on the electrical performance of cable in turn, and it is convenient to keep the stability of connecting piece when personnel extracts support pipe, need not to support connecting piece when extracting support pipe, improve the convenience of personnel operation.

Description

Technical Field

[0001] This utility model relates to the field of cable connector technology, and in particular to a cold-shrink cable intermediate connector. Background Technology

[0002] Cold-shrink cable connectors are insulating components used for intermediate connections of cables. They are mainly used for electrical connection and insulation sealing of two cable segments. They are made of elastic materials such as silicone rubber or EPDM rubber, which are pre-expanded on a plastic support tube. During installation, the support tube is simply removed, and the elastic material will automatically shrink and tighten onto the cable without heating or special tools, hence the name "cold-shrink". They can ensure the electrical performance, mechanical strength and environmental protection capabilities of the two cable segments after connection.

[0003] Existing cold-shrink connectors are first fitted over the cable. After the cables are connected at both ends, the connector is moved to the connection point. Then, the internal support tube is removed to cover the cable. However, when the internal support tube is removed, it causes the support tube to shake, which in turn causes the external elastic material to shake. This can easily lead to the connector shifting its position relative to the cable, affecting the integrity of the cable connection and impacting the cable's electrical performance. Utility Model Content

[0004] The purpose of this utility model is to provide a cold-shrink cable intermediate connector, which facilitates fixing the position of the connector before removing the internal support tube, thereby ensuring the accuracy of the connector's position on the cable and thus avoiding any impact on the electrical performance of the cable.

[0005] To achieve the above objectives, a cold-shrink cable intermediate connector is provided, comprising: a sheath, a support tube sleeved on the inner surface of the sheath, fixing rings sleeved at both ends of the sheath, an adjusting rod threadedly connected to the fixing ring, a clamping plate rotatably connected to the end of the adjusting rod away from the fixing ring, a connecting ring provided on the side of the fixing ring connected to the sheath, the fixing ring including an upper clamping ring and a lower clamping ring, an upper connecting seat fixedly connected to the outer surface of the upper clamping ring, and a lower connecting seat fixedly connected to the outer surface of the lower clamping ring;

[0006] A connecting block is fixedly connected to the lower surface of the upper connecting seat. A first spring is fixedly connected to the inner side wall of the connecting block. A locking block is fixedly connected to the end of the first spring away from the connecting block. A second spring is fixedly connected to the side of the lower connecting seat away from the lower clamping ring. A pressing block is fixedly connected to the side of the second spring away from the lower connecting seat. A connecting rod is fixedly connected to the side of the pressing block connected to the second spring. A push plate is fixedly connected to the end of the connecting rod away from the pressing block.

[0007] According to the aforementioned cold-shrink cable intermediate connector, the sheathing component includes a waterproof layer, an EPDM rubber layer, and a protective layer. The outer surface of the EPDM rubber layer is fixedly connected to the waterproof layer, and the inner surface of the EPDM rubber layer is fixedly connected to the protective layer. This facilitates preventing external water seepage into the cable connection and also protects the EPDM rubber layer from damage at the connection.

[0008] According to the aforementioned cold-shrink cable intermediate connector, the waterproof layer is made of water-cured fiberglass armor tape, and the protective layer is made of silicone rubber.

[0009] According to the aforementioned cold-shrink cable intermediate connector, a pull-out rope is provided on the right side of the support tube, and the end of the pull-out rope extends to the outside of the fixing ring on the left side to facilitate the pull-out of the support tube.

[0010] According to the aforementioned intermediate connector for cold-shrink cables, a guide rod is fixedly connected to the outer surface of the clamping plate. The outer surface of the guide rod is slidably connected to the fixing ring, which facilitates the guidance of the movement of the clamping plate and improves the stability of the movement of the clamping plate. At the same time, it can prevent the clamping plate from rotating with the adjustment rod.

[0011] According to the aforementioned cold-shrink cable intermediate connector, the outer surface of the connecting ring is coated with a release coating, and the connection between the sheath and the fixing ring is provided with an adhesive coating, which facilitates the separation of the connecting ring and the sheath, and at the same time can improve the tightness of the connection between the two ends of the sheath and the cable, thereby improving the sealing performance.

[0012] According to the aforementioned cold-shrink cable intermediate connector, the outer surface of the locking block is slidably connected to the connecting block, and the outer surface of the locking block engages with the lower connecting seat.

[0013] According to the aforementioned cold-shrink cable intermediate connector, the outer surface of the push plate is slidably connected to the lower connecting seat.

[0014] The above-mentioned solution has the following beneficial effects:

[0015] 1. The fixing rings at both ends make it easy to fix the position of the connector before removing the internal support tube, thereby ensuring the accuracy of the connector's position on the cable and avoiding any impact on the cable's electrical performance.

[0016] 2. By pre-fixing the connectors, it is easy to maintain the stability of the connectors when personnel remove the support pipe, eliminating the need to support the connectors when removing the support pipe and improving the convenience of personnel operation.

[0017] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0018] The present invention will be further described below with reference to the accompanying drawings and embodiments;

[0019] Figure 1 This is an overall structural diagram of a cold-shrink cable intermediate connector according to the present invention;

[0020] Figure 2 This is an overall structural diagram of a cold-shrink cable intermediate connector according to the present invention;

[0021] Figure 3 for Figure 2 Enlarged view of point A in the middle;

[0022] Figure 4 This is a partial structural cross-sectional view of a cold-shrink cable intermediate connector according to the present invention.

[0023] Legend:

[0024] 1. Covering component; 2. Fixing ring; 3. Adjusting rod; 4. Clamping plate; 5. Connecting ring; 6. Upper clamping ring; 7. Lower clamping ring; 8. Upper connecting seat; 9. Connecting block; 10. First spring; 11. Locking block; 12. Lower connecting seat; 13. Second spring; 14. Pressing block; 15. Connecting rod; 16. Push plate; 17. Waterproof layer; 18. EPDM rubber layer; 19. Protective layer; 20. Support tube; 21. Pull-out rope; 22. Guide rod; 23. Adhesive coating. Detailed Implementation

[0025] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.

[0026] Reference Figure 1-4This utility model discloses a cold-shrink cable intermediate connector, comprising: a covering 1, a support tube 20 sleeved on the inner surface of the covering 1, and fixing rings 2 sleeved at both ends of the covering 1. A pull-out rope 21 is provided on the right side of the support tube 20, with the end of the pull-out rope 21 extending to the outside of the fixing ring 2 on the left side. An adjusting rod 3 is threadedly connected to the fixing ring 2, and a clamping plate 4 is rotatably connected to the end of the adjusting rod 3 away from the fixing ring 2. A guide rod 22 is fixedly connected to the outer surface of the clamping plate 4, and the outer surface of the guide rod 22 is slidably connected to the fixing ring 2 to facilitate guiding the movement of the clamping plate 4 and improve clamping. The stability of plate 4 movement is improved, and the clamping plate 4 can be prevented from rotating with the adjusting rod 3. A connecting ring 5 is provided on the side of the fixing ring 2 connected to the covering 1. The outer surface of the connecting ring 5 is sprayed with a release coating. Adhesive coating 23 is provided at the connection between the covering 1 and the fixing ring 2 to facilitate the separation of the connecting ring 5 and the covering 1. At the same time, it can improve the tightness of the connection between the two ends of the covering 1 and the cable and improve the sealing performance. The fixing ring 2 includes an upper clamping ring 6 and a lower clamping ring 7. An upper connecting seat 8 is fixedly connected to the outer surface of the upper clamping ring 6, and a lower connecting seat 12 is fixedly connected to the outer surface of the lower clamping ring 7.

[0027] A connecting block 9 is fixedly connected to the lower surface of the upper connecting seat 8. A first spring 10 is fixedly connected to the inner side wall of the connecting block 9. A locking block 11 is fixedly connected to the end of the first spring 10 away from the connecting block 9. The outer surface of the locking block 11 is slidably connected to the connecting block 9. The outer surface of the locking block 11 engages with the lower connecting seat 12. A second spring 13 is fixedly connected to the side of the lower connecting seat 12 away from the lower clamping ring 7. A pressing block 14 is fixedly connected to the side of the second spring 13 away from the lower connecting seat 12. A connecting rod 15 is fixedly connected to the side of the pressing block 14 connected to the second spring 13. A push plate 16 is fixedly connected to the end of the connecting rod 15 away from the pressing block 14. The outer surface of the push plate 16 is slidably connected to the lower connecting seat 12.

[0028] The covering component 1 includes a waterproof layer 17, an EPDM rubber layer 18, and a protective layer 19. The outer surface of the EPDM rubber layer 18 is fixedly connected to the waterproof layer 17, and the inner surface of the EPDM rubber layer 18 is fixedly connected to the protective layer 19 to prevent damage to the connection. The waterproof layer 17 is made of water-cured fiberglass armor tape, and the protective layer 19 is made of silicone rubber to prevent water from seeping into the cable connection and to protect the EPDM rubber layer 18.

[0029] Working principle: The device is placed over the cable to be connected. After the cable is connected, the device is moved to a suitable position. The adjusting rods 3 on both sides of the fixing ring 2 are rotated to move the clamping plate 4 to clamp and fix the cable. The support tube 20 inside the covering 1 is pulled out by the pull rope 21, so that the covering 1 shrinks to cover the cable. After the covering is completed, the adjusting rod 3 is rotated in the opposite direction to release the cable fixation. The fixing ring 2 is pulled outward to separate the connecting ring 5 from the covering 1, so that the adhesive coating 23 adheres to the cable and improves the sealing performance at both ends. The pressing block 14 drives the push plate 16 to move through the connecting rod 15, pushing the locking block 11 out from the lower connecting seat 12 and separating the locking block 11 from the lower connecting seat 12. This cancels the connection between the lower connecting seat 12 and the connecting block 9, and then the upper clamping ring 6 and the lower clamping ring 7 can be separated, and the fixing ring 2 can be removed from the cable.

[0030] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. A cold-shrink cable intermediate connector, comprising: A covering (1) is provided with a support tube (20) on its inner surface. The covering (1) is characterized in that a fixing ring (2) is provided at both ends of the covering (1). An adjusting rod (3) is threadedly connected to the fixing ring (2). A clamping plate (4) is rotatably connected to the end of the adjusting rod (3) away from the fixing ring (2). A connecting ring (5) is provided on the side of the fixing ring (2) connected to the covering (1). The fixing ring (2) includes an upper clamping ring (6) and a lower clamping ring (7). An upper connecting seat (8) is fixedly connected to the outer surface of the upper clamping ring (6). A lower connecting seat (12) is fixedly connected to the outer surface of the lower clamping ring (7). A connecting block (9) is fixedly connected to the lower surface of the upper connecting seat (8). A first spring (10) is fixedly connected to the inner side wall of the connecting block (9). A locking block (11) is fixedly connected to the end of the first spring (10) away from the connecting block (9). A second spring (13) is fixedly connected to the side of the lower connecting seat (12) away from the lower clamping ring (7). A pressing block (14) is fixedly connected to the side of the second spring (13) away from the lower connecting seat (12). A connecting rod (15) is fixedly connected to the side of the pressing block (14) connected to the second spring (13). A push plate (16) is fixedly connected to the end of the connecting rod (15) away from the pressing block (14).

2. The intermediate connector for a cold-shrink cable according to claim 1, characterized in that, The covering (1) includes a waterproof layer (17), an EPDM rubber layer (18), and a protective layer (19). The outer surface of the EPDM rubber layer (18) is fixedly connected to the waterproof layer (17), and the inner surface of the EPDM rubber layer (18) is fixedly connected to the protective layer (19).

3. A cold-shrink cable intermediate connector according to claim 2, characterized in that, The waterproof layer (17) is made of water-cured fiberglass armor tape, and the protective layer (19) is made of silicone rubber.

4. The intermediate connector for a cold-shrink cable according to claim 1, characterized in that, A pull-out rope (21) is provided on the right side of the support tube (20), and the end of the pull-out rope (21) extends to the outside of the fixing ring (2) on the left side.

5. A cold-shrink cable intermediate connector according to claim 1, characterized in that, The outer surface of the clamping plate (4) is fixedly connected to a guide rod (22), and the outer surface of the guide rod (22) is slidably connected to the fixing ring (2).

6. A cold-shrink cable intermediate connector according to claim 1, characterized in that, The outer surface of the connecting ring (5) is coated with a release coating, and the connection between the covering (1) and the fixing ring (2) is provided with an adhesive coating (23).

7. A cold-shrink cable intermediate connector according to claim 1, characterized in that, The outer surface of the card block (11) is slidably connected to the connecting block (9), and the outer surface of the card block (11) is engaged with the lower connecting seat (12).

8. A cold-shrink cable intermediate connector according to claim 1, characterized in that, The outer surface of the push plate (16) is slidably connected to the lower connecting seat (12).

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